Is saying "May Allah reckon with him" considered a supplication against a person, and is it preferable to be patient and forgiving instead?

The statement "Hasibuhullah" (Allah is his Reckoner) is a delegation of the matter to Allah regarding judging and recompensing a person. Its meaning is understood from the context. If it is said concerning someone who has committed injustice, it is a supplication that Allah may recompense him with what he deserves. It may also mean the One who knows his situation and will recompense him, or the Sufficient, or the Acquirer of reckoning, or the All-Capable. It is also used to delegate the matter of a disobedient person to Allah and refrain from judging him, as in the story of Ma'iz: "He is a man who committed a sin, Allah is his Reckoner." It may also be used when praising someone, as a precaution against the praiser asserting what he does not know, thus delegating the matter to Allah. In the case of the questioner, the context indicates that it is a supplication against someone who has troubled her, which is permissible, though forgiveness and patience are better for her.